Page 5.21C Chapter 5 Inspections APR 2019
5-45 100-Hour / Annual Inspection (continued)
MAIN ROTOR GEARBOX COMPARTMENT (continued)
Hydraulic Servo Support Frame:
Inspect condition. Inspect rod ends per § 5-33. Use an inspection light and mirror to
inspect all parts of each weld. Verify no cracks or corrosion in servo support. Verify
proper installation and security.
Jackshaft:
Inspect condition. Verify no cracks or corrosion in welded assembly. Inspect
jackshaft to vertical push-pull tube attachment. Inspect jackshaft aft support frame
attachment and forward attachment rod end per § 5-33. Inspect C343-8 tube and rod
ends linking jackshaft to aft servo. Verify security and proper operating clearance.
Main Rotor Push-Pull Tubes:
Examine accessible portion with inspection light and mirror. Inspect condition per
§ 5-32. Verify no nicks, scratches, chafing, dents, cracks or corrosion. Inspect
rod end bearings per Section 5-33; verify rod ends are centered and palnut and jam
nut are tight. Check witness holes for proper thread engagement. Verify proper
installation, security, and operating clearance.
Tail Rotor Push-Pull Tube & Forward Bellcrank:
Examine accessible portion with inspection light and mirror. Inspect condition per §
5-32. Verify no nicks, scratches, chafing, dents, cracks, or corrosion. Inspect rod
end bearings per § 5-33; verify rod ends are centered and palnut and jam nut are
tight. Check witness holes for proper thread engagement. Inspect bellcrank and
bellcrank sheet metal mounting for nicks, scratches, dents, cracks, or corrosion.
Inspect spherical bearings per § 5-33. Verify proper installation, security, and
operating clearance.
Hydraulic Reservoir:
Inspect condition. Verify no significant leakage. Replace filter and packing at
intervals specified in § 5-20. Drain and flush hydraulic system per § 12-33 if oil has
turned dark or emits bad odor. Add fluid as required. Verify security.
CAUTION
Cleanliness of hydraulic fluid is vital to proper system operation.
Service hydraulic system with clean fluid from sealed containers.
Verify funnels, tubing, and other service tooling is free of
contaminants.
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